Jessica's lab is way cooler than my office.
Bio people just have cooler stuff lying around than programmer types. All the cool stuff I get to play with is sitting in a data center hundreds of miles away from my office.
So, if you're looking for a job where you get to have all sorts of cool toys around the office, 'bio grad student' seems to have 'programmer' beat.
Of course, if you want to actually get paid a reasonable amount of money, 'programmer' still comes out on top ;-)